Combination fire and police alarm and telephone call box



Marchlz, 1%. R. w, CARNAHAN l9?@49$97 COMBINATION FIRE AND POLICE ALARM AND TELEPHONE CALL BOX Filed May 19. 1923. I 5 Sheets-Sheet 1 I Qwwntoz MK Kama/2w March 12, 1.929. R. WII'CA'RNAHAN 3 commute FIRE ANDPOLICfi ALARM-AND TELEPHONE -CAL L Box Filed May 19, -192:5 5- Sheets-Sheet 2 p, 'ld'ilmimn "llillllllnglllli March 12, 1929.

R. W. CARN COMBINAYIOWF IRE AND POLICE ALARM AND TBLEPHONE CALL BOX Filed 9. 1923 5 SheecS-s 5 1929. R. w. CARNAHAN COMBINATION FIRE AND roman maxim AND TELEPHONE CALL 36x March 12,

Filed May 19,1925 5- Sheets-Sheet 4 gwuento z RM Kama/law March 12, 1929, R. w. QARNAHAN 1,704,697

couazm'zzou was AND POLICE "ALA M mbflwimraous gnu. BOX

5 Sheets- Sh eet Filed May 19, 1923 Svvuenoz 19W Jana/2am 5mm M a my oh 4 6 0 f R I m cnvm/u STAT/0A il atenteri Mar. 1123, N29.

ire 'rii'ras rs nr re ns.

RALPH W. GAB-NAHAAT, F CLEVELAND/OHIO, ,assrenon, sir-.mnsnnhssrenlvrnnrs,

TO THE PARAMOUNT FIRE'ALARM Eneninnnrneooirrsn'y, or orinvnranp 0 1 7 A CORPORATION OF OHIO.

coM B'rnArIon FIRE AND POLICE ALARM Am) rnrsrnonn CALL 1303;.

Application filed May 19,-

This invention relates to a combined fire alarm and police call box provided With a telephone for the use oi the police department, and has for its objects to produce a box of this character in which the fire alarm mechanism only is accessible to the public, While thepolice alarm mechanism and telcphone are accessible to the police department; the fire mechanism using a circuit to the fire station separate from the police and telephone circuit and the police alarm mechanism and telephone both using the seine circuit to police headquarters and being automatically thrown into or out of said circuit by theraising and lowering-of the telephone hook, a double make and break device beingprovided in the box and controlled by the movement of the hook for accomplishing the same. The above and other objects may be attained by constructing the invention in the manner illustrated in the accompanying drawings,.in'which I Figure 1 is a front elevation of'a combined fire and police alarm and telephone call box embodying the invention; 7

Fig. 2, an elevation of the same Withthe outer door opened, giving access to the telephone and police call box; 1 V

3, an elevation of the mechanism within the box; 7

Fig. 4, an enlarged side police signal, mechanism; 7

5, a section through the sameon the line 5, Fig.3; 7 a

Fifi. 6, a sect-ionon the line 6--6, Fig. 3;

7, a vertical, sectional View through one of the mercuryinake and break boxes;

Fig 8, a perspective view of the'double make and break box controlling the telephone and police alarm signals; V

r Fig. 9 a vertical" sectional view through the upper portion of the police alarm box; Fig. a section on the line 19-10,'l 9; 'y 11, a detail perspective View of the operating gear in the police signal mechanism; 1 i

Fig. 12, a detail perspective View of the r elevation of the disk operated by the gear; is

Figz'lih a detail perspectii' e vi'ew oi' the ratchet through. Which the police signal mechanism is operated; r

Fig. 14, a diagrammatic view'of the wir ing atf t-he signal station and at the central station,

throughout the drawing 1. have access only to the operating lever of the firefalarm mechanism and this only by breaking the glasspanel covering the same; The

1923. Serial no. 640,197.

Similar mnnerals refer to similar parts The mechanism is contained Within a metal box 1 arranged to be supported upona suitsble post or the like, and provided with the hinged door 2 having a compartment 3 formed therein and provided With'the opening 4-. thi'oiiglrvjvliicli extends the handle portion 5 of theop'erat-i-ng lover of the tire alarm mechanism,zi -glass panel 6 covering the compertinent thereby making; it necessary to break the glass in order to have; access to the operating lever, as the door is normallyzheld in the closed position byrineans of thelock 7. With the parts in the position shown in it will beseen thatthe public can key to the lock 7 :is in thelipossessionof the police oil ricer upon Whose post the box is'lo- I carted.

When the door 2is opened, as .sho wn in Fig. 2, the policeman has-access :torthe push button 8 which operates the policesignal mechanism, the telephone transmitter 9 and the receiver l0;Which hangs upon the hook v 11, the Weight thereon normally hQlCllDfZ the hook down in the positionshown in Fig. 2;

All of these parts are mounted'upon or ex- 'ten dedthroug'h the cover plate 12 Which covers all of the fire andpolice signal mechanism and'the telephone mechanism and is.

held in-place asbythe screws 13 which are extended into l}l1&.;p;t1t1 510n alls 14- oft-he box.

The/fire alarm'signal mechanisinis sub- ,stantiallythe sameas that disclosed in my copending application. Serial No; 60-2,,11"

and issupp'orted in-the frame 15 which is mounted in the upper portion of the box in Theniecha-nism Within the frame, 15 is arranged to'be operated by depressing th op erating lever 5 and rotates,thc'signal :Wheel "16, the circumferential surface-'of-Which is provided Withgroupsof teeth "l 'l arranged in any" desired combinationtoproduce the signal inripulses; 1

The teeth upon :thelsignal' wheel engage the dependingtooth'lS of the lever 19; Wl iichis pivoted as at'20, the 'free end thereof being provided with an insulated knob 21 WlliCliQllgages the sin-lab le rod 22 whrch-carries'the V movable contacts of the make and break device mounted in the insulated box 23.

As each of the several make and break devices in the box is of the same general construction, attention is here directedto Fig.

,7, which shows a sectional view of one of the make and break devices The slidable rod 22 is slidably mounted through a suitable vertical bearing in the insulated'box 23, within which the make and break device is contained. and connected .28 to which the wires leading to the central station are connected, a suitable source of electrical energy being located in the circuit. Each of the cups 27 contains mercury, and

a the movable contacts are provided with the open tips 29 preferably formed of thin strips of suitable conducting material bent into the form shown in the drawin aand connected at their extremities to the cylindrical portions.25 of the movable contacts, thus leaving the central openings 29 through the tips, through which the mercury may flow when 1 the movable contact members are in the normal position, in contact with the fixed contact members, as illustrated in Fig. 7.

The wires 50 lead from the fixed contact points of the make and break box 23 in the fire signal mechanism to the apparatus in the central fire station. Thus when the fire signal mechanisinis operated through the depression oi the-operating lever 5, the signal wheel 1.6.will be rotated intermittently raising and lowering the yoke 24 to make and break tho'circuit to the central fire station at predetermined intervals, producing the proper impulses "which operate the mechanism at thecentral station. i V

V The police call mechanism is mounted in the lower portion of the box and housed between the side plates 31 and 32 and held in spaced relation as by the spacingbolts 33.- The mechanism is arranged. to-be set in inot-ion by the inward movement of the rack bar 34 provided with the push button 8.

The rack bar meshes with a windin member gear35 which is rotatably monntediipon the hub 36 of the drum 37, rotatably mounted upon'the shaft 38. The gear 35is provided with the annular flange 39 extending into the socketv 40 provided in the side plate 32 and a spiral spring 41 is connected at its outer end to the flange 39 and at its inner end to the shaft 38 for normallyreturningthe gear and. rack bar to the initial position.

The-hub 36 of the drum 37 is provided with a disk 42. located within the annular flange 39 of the gear and provided with the shoulder rotatably mounted upon-the shaft arranged'to engagedby the L-shaped pawl 44 which is pivoted as at 45 upon the gear 35.

A lever 46 is pivoted as at 47 upon a bracket mounted upon the side plate 32' and provided with a spring'48 tending to normally hold the lever out of engagement with the pawl 44. A finger 49 is fixed upon the side of the drum 37 for the purpose of engaging the lever 46 and rocking the same against the action of the spring into engagen'ient with the pawl 44. p

A spring pressed paw 50 is mounted in the cavity 51 of the drum and arranged to selectively engage each of the four ratchet teeth 52 upon the hub 53 of the gear 54 which is block 55 is fixed upon the periphery of the drum 37.

A weight 56 is provided with the vertical ribs 57 upon its sides which are slidably mounted within the guide grooves 58 formed in the side plates. A tape or ribbon 59 is con- 7 nected at one'end tothe drum 37 and. passes under the pulley 60 which is mounted upon the weight, the other end of the tape being connected to the upper, rear, spacing post as at 61. V

A stop 62 is fixed upon the inner face of the side plate 32in position to be engaged.

by the outer end of the pawl 44 to disengage said pawl from the disk 42 when the gear 35 is rotated to the forward limit of its move ment by the rack-bar 34.

The gear 54 meshes withan idler gear 63 pivoted upon a stud 64 carried by the side plate 31. The idler 63 meshes with the pinion 65 upon the signal wheel sha-i t 66 which is journaled through the lower tor-ward per tions otthe side plates 31 and 82, one end thereof extending through thepla te 31, as

shown at 67.

notched 66 and provided with the notch 69 arranged to be engaged by the weighted depending portion 70 of the stop lever 71, the upper end of which is located adjacent to the pe .riphery ofthe drum 37, and arranged to be engaged by the block55 upon said drum.v

The lever 71 is pivoted intermediate its extremities as at 72 upon a stud 73 supported from the side'plate 32. The gear 54 meshes with a pinion 74 fixed upon. aeount'ershatt 75,21 gear 76 being also fixed upon said counter shaft and meshing'with the pinion 77 upon the parallel shaft 78.

An escapement wheel 7 9 is fixed upon the shaft 78 and engaged by the palette 80 which is mounted upon the shaft 81. The'palette acting upon the escapement wheel thus providesfor a uniform operation of the gearing when the'sam'e is operated. 1 The signal wheel 82 is mounted upon the outer extremity of the shaft 66 and the periphery thereof is provided with groups of disk 68 is fixed upon the shaft projecting teeth 83 arrai-iged in any desired combination to produce the proper signal im- 22 M? the make and break device enclosed in'the insulated box 23. The wires 88 from the make and break box 23 are extended through the insulated wall 89 and are con nected through-the make and break box 23? with the wires 90 which lead to the police 7 headquarters.

The make and break box 23 is preferably formed integralwith the box23". The acks 91 and 92'101 the attachment 01 the transmitter 9 and receiver 10 are connected by the wires 93 with the line wires 90, through the make and break box 23.

' The hook 11 of the telephone is fixed upon the rocker shaft- 94 which is provided with a spring 95 for normally urging the hook upward into the raisedfposition. A lever 90 is fixed upon the rocker shaft 9 1 and is connected to the yokes 24 and 24C of the make and break device s23 and 23 respectively, by

means of the links'97.

When the receiver 10 is hanging upon the hook 11, the weight thereof is sufiicient to hold the hook down, against the pressure of thespring 95, clos ng the circuit to the n'iake and break device 23" and o )enino' the O circuit through the make and break de v1ce23.

The line wires 90 lead to the police headquarters and asdiagrammatically shown in Fig. 15, are connected up to the apparatus inthe central otlice. A battery 98 or other suitable source of electrical energy is provided at the central oflice' and-connected as by the wire 99 with the telephone hook 100,

the other side of the; battery being eonnected to one of the wires 90,)the other Wire 90 being connected to the punch register indicated at Toregister 101. l

VJ hen the hook 100 is in the normal or lowcred position, it makes .contact witlrthe .wire

102 which leads directly to the other side of the punch register and when the hook is raised by removing the receiver, it makes contact with the wire 103 which is connected to the transmitter 104 and receiver 105 and leads to the same side of the punch register as the wire 102.

The door of the closed and looked, as shown in Fig. 1, covering the police call mechanism and giving the public access only to the operating lever of box normally remains the fire sigi-ial glass 6.1 i

The police oliicci-r upon whose post. the box is located, carries a key'to the. lock? and by opening the door. as shown inFig. 2, he

has accessto the push button 8 of the police is connected to police headquarters.

When the telephoneireceiver 10 is hanging upon the hook 11, the hook is: held in the lows cred position, closing the circuit from the make and break device 23 of the police signalmechanism to the central oifice through them'ake and break device 23", while the make and break device 23 is in the open position, breaking the circuit from the transmitter and receiver 9-and 10 respectively to the central onice,

to its limit,the rackbar 34 will rotate the gear 35 a trifle over one-fourth of arevolu tion, the pawl a l upon the gear engaging the shoulder 43' o'fthe disk t2and rotating said .disk with the gear; r

The drum 3'? being fixed to the-hub Sti of the disk, will be rotated the samedistance as the gear, the'spring pressed pawl thereof engaging one of the teeth 52 upon the hub 530f the gear 54:.

[it this time, thefpawl la upon the gear will strike the stop 62, lifting said pawl out of engagement with the shoulder 43 upon the disk, the coil springll throwing the gear back to the initial position, which, of course, moves the rack bar 34: outward to; the initial position.

As thedrum 3? is rotated forward," the weight 56- will be raised b-y the tape 59 and asthe'parts reach the positionrabove .d escribed, the block upon the drum, will, at thesame; time, strike theupperend of the lever 71, moving'the lower weighted end mechanism bybreaking the- When the push button Sis pushed inward signal mechanism and to the telephone which thereof. out of engagement withthe shoulder 690i the disk 68; p g The weight will then start to descend slowly, moving the dinml37 back toward the initial position,- the escapement mechanism" causing the gearing to operateslowly and uniformly to rotate the signal wheel 82-t-he desirednumber of revolutions 1n the direction of thearrow shown theleoninFig. 4:,

the teeth 83thcreof raisingand loweri-ngthe lever 84: intermittently to produce the desired impulses through the make and break mechanism 23 "o'ieratin the mechanism inv the central loffice to register the code" signal from the police signaljn'iechanism.

As the'weight reaches the lower limit of its movement, the parts willbe movedback to the initial position, the weighted end 70 of the lever 71, dropping into engagement with the shoulder" 69 of the disk 68, stopping further movement ofthe gearing.

At the same time, the finger 4:9 upon; the

drum will strike the outer end oi the lever46, 9

throwing the inner end thereof into engagement with the outer extremity of the pawl a l upon the gear 35,- resetting said pawl in contact with the shoulder 48 of the disk 4-2.

It will be seen that after the rack bar 34 'has been depressed to. the full limit of its the signal number of the box has been transe mitted to the central ortice and repeated the desired number of t1mes tor-wh1ch the mechanism is set to operate.

After the police signal mechanism has been operated, the police officer may remove the receiver fronrthe hook 11, when the spring 95 will. immediately throw the hook into the raised position, breaking the circuit through the make and break box 23 and closing the circuit from the transmitter and receiver. 9 and 10 respectively to the central ofice, through the make and break box 23, permitting thetelephone to be used to talk from the box to the central station.

This operation of the police signal mechanism and telephone does not in any way in terfere with the circuit from the fire alarm mechanism for the reason that the fire alarm employs a circuit separate from the police andteleph necircuit, and permits of a fire alarm beingsent in at the same time the policeman is using the police signal mechanism. r 1

I claim 7 1. In a signal transmitter, transmitting mechanism comprising a rotatable drum having means associated therewith whereby when the drum is rotated in one direction it stores energy to transmit the signal and gradually returns to its normal position dur ing transmission of the signal, adisk fixed to the drum and provided with a shoulder, a

rotatable winding member, an L-shaped pawl pivoted upon the winding member and adapted to engage the shoulder upon said disk, a finger on .said drum, a springpressed lever adapted to be struck by said finger to throw the pawl into engagement with the shoulder ,or the disk, and a stop-tor disengaging :the

' movement. .1 f 2. In a signal t'ansmit'ter, transmitting pawl from the disk when the winding memher s rotated to the limit of its winding mechanism comprising a rotatable drumihaving means associated therewith whereby when the drum is rotated in one directionit stores energy .to transmit the signal andgradually returns to its normal position during tlflDSHllSSlOILOf the signal, a disk fixed to the drum and provlded with a shoulder,

a rotatable winding gear, a rack for rotating the gear, an L-shaped pawl pivoted upon the gear and adapted to engage the shoulder upon said disk,- a finger on said drum,- a sprin pressed lever adapted to be struck by saidiiinger to throw the pawl into engagement with the shoulder of the disk, and a stop for disengaging the pawl from the disk when the gear is rotated to the limit oi its winding movement. p v

3. In a signal transmitter, transmitting mechanism comprising a rotatable drum hav in means associated therewith whereby when the drum is rotated in one direction it stores energy to transmit the signal and gradually returns to its normal position during transmission of the signal, a disk provided with a notch associated withthe transmitting mechanism, astop lever having a weighted end-adapted to engage the notch in the disk, and a block upon the drum adapted to disengage the stop lever from the notch in the disk when the drum is rotated to the limit 01 its energy storing movement.

a. In a signal transmitter, transmitting mechanism comprising a-rotatable drum having means associated therewith whereby when the drum is rotated in 0116'Cl1r8Qt1OILlt stores energy to transmit the signal and Y gradually returns to 1ts normal posltlon during transmission of the signal, a disk fixed to the drum and provided with a shoulder, a"

rotatable windingmember, an Lshaped pawl pivoted upon the winding member and adapt ed to engage the shoulder upon said disk, a v

finger on said drum, a springpressed lever adaptedto be struck by said .fing'er to throw the pawl into engagement with the shoulder of the disk, a stop for disengaging the pawl from the disk when the windingmemberv is rotated to the limit of its windingmovement,

a disk provided with a notch associatedwith the transmitting mechanism, astop lever'having a weighted end adapted to engage the notch in the disk, and ablock upon the drum adapted to-disengage the stop lever from the notch in the disk when the drum is rotated to the limit of its energystoringi'movement.

I In testimony that I claim the above, I havehereunto subscribed my name. 1

" RALPH w. GARNAHAN'. 

